Byron densmore



@Ma JM.

utml tant Letters Patent No. 106,7 91, dated August 30, 1870; antellateal August 24, 1870.

IMPROVEMENT IN ADJUSTMENTS FOR PUMPRODS.

The Schedule referred to in these Letters Patent z nakng p31 of thesame.

I, BYRON Dnxsnoan, of the city of New York, in the Slate ot' New York, have invented certain 1mprovements in Adjustable Attachments for Varying;r the Stroke ot' Fwd-Pumps for Stezbzu-loilcrs, an l for other purposes, o' which the following is a specilication.

Delwriptionv of the Accompanying Drawing.

Figure 1 shows the whole machine.

A is the pump.

B is the crank that drives it.

C is the iulcrunl of the lever D, so attached that the lever revolves unit.

E and E are screw-nuts, working on the lever D.

These nuts and the fulcrum U have journals on each and, working in boxes attached to the connecting-rods G, H, and I.

The lever D is screwed its whole length. From 1 to 2 it is a lcft-hand screw, of coarse lead. From 2 to 3 it is right-hand, and has a. tine lead; or the leads ol' both may be alike.-

The nuts E and F come together at 2. Then the pump has its full stroke.

To reduce the stroke, turn the lever D with tbe crank L, ao'that the nuts E and F go apart, and, while E is traveling to 3, F will go to 1. Then the pump has its shortest stroke.

I claim as my inventiml- -Tbe level-1), in combination with the attachments E, F, and C, arranged and operated as specified, for

varying motions.

BYRON DENSMORE.

Witnesses MARY E. DENsMoRE, ABRAHAM ODELL. 

